Impreza 08-2015 WRX STi --- M2 Motorsport silicone triple re enforced temperature resistant hoses made from state of the art modern manufacturing techniques. For the best looks and performance it has to be silicone. Silicone hoses operate at much higher temperatures and pressures than other rubber hoses. Clean with soap and water as with any manufacture of silicone hoses they do not like solvent based agents.
